Senior Hydrogeologist

Hydrogeologist (QPESA)

Location: Guelph, Ontario
Work Model: Hybrid (office- and site-based)

About the Opportunity

A well‑established environmental consulting firm is seeking a Qualified Professional – Environmental Site Assessment (QPESA) Hydrogeologist to support and lead contaminated site investigations across Ontario. This opportunity is ideal for an experienced intermediate to senior hydrogeologist with a strong background in Phase I and Phase II Environmental Site Assessments (ESAs), contaminated site remediation, and Ontario environmental regulations.

The successful candidate will be authorized to review, sign, and seal contaminated site reports and will provide technical leadership on projects involving groundwater characterization and mitigation, particularly within downstream oil & gas and retail fuel (gas station) environments.

Key Responsibilities

• Act as a QPESA for Environmental Site Assessments in accordance with Ontario regulations
• Review, approve, and sign Phase I and Phase II ESA reports
• Lead and contribute to contaminated site investigations, including:
  • Soil and groundwater assessments
  • Site characterization and delineation
  • Risk evaluation and mitigation strategies
• Provide technical oversight and mentorship to junior and intermediate staff
• Liaise with regulators, clients, and project stakeholders
• Conduct and/or oversee field programs, including groundwater monitoring, sampling, and data interpretation
• Support remediation planning and regulatory closure strategies
• Ensure compliance with provincial standards and reporting requirements

Qualifications & Experience

• QPESA designation (required) with demonstrated authority to sign contaminated site reports
• Background as a Physical Hydrogeologist
• Typically 8–15+ years of progressive experience in environmental consulting
• Strong contaminated sites experience, preferably within:
  • Downstream oil & gas
  • Retail fuel / gas station sites
  • Industrial or commercial properties
• Proven experience with Phase I and Phase II ESAs
• Solid working knowledge of Ontario environmental regulations related to contaminated sites
• Groundwater modeling experience is considered an asset but is not required
• P.Geo designation preferred; QPESA status is essential

What We’re Looking For

• A confident professional who understands the responsibility and accountability associated with QPESA signatory authority
• A pragmatic, solutions‑oriented approach with strong regulatory judgment
• Comfort working in both office and field environments
• Strong technical writing, report‑review, and client‑facing communication skills

Compensation & Benefits

• Compensation: Flexible and commensurate with experience and seniority
• Hybrid work model (office and site-based)
• Opportunity to step into a senior technical role within a respected environmental consulting firm
• Supportive team environment with opportunities for continued professional growth

To apply for this position, please send your resume in Word format to heena.raza@trsstaffing.com

We thank all applicants for their interest. However, only those selected for interviews will be contacted. 

TRS Staffing Solutions (Canada) Inc. specializes in supplying engineers, designers, project managers, and other technical and professional services personnel to a broad spectrum of industries worldwide.

We are an equal opportunity employer. All qualified individuals will receive consideration for employment without regard to race; color; age; sex; sexual orientation; gender identity; religion; national origin; disability; veteran status; genetic information; or any other criteria protected by governing law.